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Contingencies (Tables)
6 Months Ended
Jun. 30, 2011
Contingencies [Abstract]  
Pre tax charges in connection with lawsuits
                                 
    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
    2011     2010     2011     2010  
Professional fees and other related costs
  $ 6,174     $     $ 6,174     $